Statistical power analysis was performed with the primary outcome of return to work within 14 days of the intervention. The proportion of the control group returning to work was hypothesized to be 50%. Oral prednisone was hypothesized to have a 50% treatment effect, resulting in a 75% rate of return to work within 14 days. Using chi square with continuity correction, statistical power analysis found that a (study and control group) sample size of 80 per subgroup would have a power of 88% to find this difference (i.e., between 50% and 75%)statistically significant at p<.05.